From e6035e32d06f36a0b7ede3edb7ba23cc279e8fd3 Mon Sep 17 00:00:00 2001
From: Jon Church <me@jonchurch.com>
Date: Sat, 27 Jul 2024 19:25:49 -0400
Subject: [PATCH] explicitly delete maxAge instead of setting as undefined

---
 lib/response.js | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/response.js b/lib/response.js
index c1e4e900da..5840d7df99 100644
--- a/lib/response.js
+++ b/lib/response.js
@@ -699,7 +699,9 @@ res.get = function(field){
 res.clearCookie = function clearCookie(name, options) {
   // Force cookie expiration by setting expires to the past
   // ensure maxAge is undefined
-  const opts = {path: '/', ...options, expires: new Date(1), maxAge: undefined}
+  const opts = { path: '/', ...options, expires: new Date(1) }
+  // ensure maxAge is not passed
+  delete opts.maxAge
 
   return this.cookie(name, '', opts);
 };